Methods and apparatus for wireless communication in systems such as omni-beam
and narrow-beam fixed wireless loop (FWL) systems. In a first technique in accordance
with the invention, referred to as code division duplex (CDD) time-slotted CDMA,
uplink and downlink portions of the system are separated using code division duplexing,
while the users within a given cell are also separated using codes, e.g., using
time-slotted CDMA. In a second technique in accordance with the invention, referred
to as time division duplex (TDD) time-slotted CDMA, uplink and downlink portions
of the system are separated using time division duplexing, e.g., time slots, while
the users in a given cell are separated using codes, e.g., time-slotted CDMA. Both
the CDD and TDD techniques may make use of an electronically-steered beam which
is designed to provide simultaneous coverage within a given cell for two or more
users separated by codes. In a third technique in accordance with the invention,
referred to as orthogonal frequency division multiplexing (OFDM), uplink and downlink
portions of the system are separated in frequency, while the users are, e.g., also
separated in frequency.